典型文献
Constructing graphene nanosheet-supported FeOOH nanodots for hydrogen storage of MgH2
文献摘要：
Novel graphene-supported FeOOH nanodots (FeOOH NDs@G) were successfully prepared by a facile hydrothermal method and doped into MgH2 through mechanical ball-milling. MgH2 with 10wt％ FeOOH NDs@G began to release hydrogen at 229.8℃, which is 106.8℃ lower than that of pure MgH2. The MgH2–10wt％ FeOOH NDs@G composite could reversibly absorb 6.0wt％ hydrogen at 200℃ under a 3.2 MPa hydrogen pressure within 60 min. With the addition of FeOOH NDs@G, the dehydrogenation and hydrogenation activation energy of MgH2 was decreased to 125.03 and 58.20 kJ·mol?1 (156.05 and 82.80 kJ·mol?1 for pure MgH2), respectively. Furthermore, the hy-drogen capacity of the FeOOH NDs@G composite retained 98.5％ of the initial capacity after 20 cycles, showing good cyclic stability. The catalytic action of FeOOH NDs@G towards MgH2 could be attributed to the synergistic effect between graphene nanosheets and in-situ formed Fe, which prevented the aggregation of Mg/MgH2 particles and accelerated the hydrogen diffusion during cycling, thus enabling the MgH2–10wt％ FeOOH NDs@G composite to exhibit excellent hydrogen storage performance.
文献关键词：
中图分类号：
作者姓名：
Mengchen Song;Liuting Zhang;Jiaguang Zheng;Zidong Yu;Shengnan Wang
作者机构：
School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212003,China;Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang 621999,China
文献出处：
引用格式：
[1]Mengchen Song;Liuting Zhang;Jiaguang Zheng;Zidong Yu;Shengnan Wang-.Constructing graphene nanosheet-supported FeOOH nanodots for hydrogen storage of MgH2)[J].矿物冶金与材料学报,2022(07):1464-1473
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Constructing,graphene,supported,FeOOH,nanodots,storage,MgH2,Novel,NDs,were,successfully,prepared,by,facile,hydrothermal,method,doped,into,through,mechanical,ball,milling,10wt,began,release,which,lower,than,that,pure,composite,could,reversibly,absorb,under,pressure,within,With,addition,dehydrogenation,activation,energy,was,decreased,kJ,respectively,Furthermore,capacity,retained,initial,after,cycles,showing,good,cyclic,stability,catalytic,action,towards,attributed,synergistic,effect,between,nanosheets,situ,formed,prevented,aggregation,particles,accelerated,diffusion,during,cycling,thus,enabling,exhibit,excellent,performance
AB值：
0.492421
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